基于k-w sst模型的海上热发射单喷管运载火箭流场仿真分析
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作者单位:

1.鲁东大学;2.烟台锆孚海洋工程科技有限公司

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基金项目:

国家基金委-山东联合基金制(U2006229);山东省重大创新工程“海上卫星发射与回收”(2020CXGC010701);山东省重点研发计划(2020ZLYS11)


Simulation analysis of flow field of single-nozzle launch vehicle for offshore thermal launch based on k-w sst model
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Affiliation:

1.Ludong University;2.Yan Tai Gulf Offshore Ltd

Fund Project:

National Foundation Committee-Shandong Joint Fund System (U2006229); Shandong Province Major Innovation Project "Maritime Satellite Launch and Recovery" (2020CXGC010701); Shandong Provincial Key R&D Program (2020ZLYS11)

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    摘要:

    为解决海上发射装置热发射时结构安全设计问题,明确海上发射装置在热发射过程中受到射流冲击的影响,围绕单喷管火箭发动机尾焰流场特性展开研究,运用计算流体力学方法基于k-ω shear stress transfer(SST)模型对3维单喷管发动机在不同飞行高度条件下进行数值模拟,得到发射过程中尾焰流场的温度、速度、压力随发射高度的变化规律。模拟结果表明,喷管出口与甲板距离对流场激波结构有重要影响,当距离超过5de(de为喷管出口直径大小)时,火箭尾流温度和速度迅速下降,30de时射流恢复甲板环境压力。研究模拟结果可为后续海上发射平台安全设计与导流装置创新提供实验参考和理论依据。

    Abstract:

    In order to solve the structural safety design problem of the thermal launch of the marine launch device, and to clarify the impact of the jet impact on the marine launch device during the thermal launch process, the study focused on the characteristics of the plume flow field of the single-nozzle rocket engine. The computational fluid dynamics method was used based on the k-ω shear stress transfer (SST) model is used to numerically simulate the three-dimensional single-nozzle engine at different flight heights, and the variation law of the temperature, velocity and pressure of the plume flow field during the launch process with the launch height is obtained. The simulation results show that the distance between the nozzle outlet and the deck has an important influence on the shock structure of the flow field. When the distance exceeds 5de, the temperature and velocity of the rocket wake drop rapidly, and the jet recovers the environmental pressure of the deck at 30de. The research and simulation results can provide experimental reference and theoretical basis for the subsequent safety design of offshore launch platforms and the innovation of diversion devices.

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  • 收稿日期:2022-08-26
  • 最后修改日期:2022-09-23
  • 录用日期:2022-09-28
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